NHK2 EARLY sign off?

Paul B. Walker, Jr.

Had 693 at 1435UTC peeling the paint off in Alaska today, and at 1440UTC, they did their usual sign off... station id, some official sounding song then the sign off music/chimes.   They aren’t listed as signing off till 1540UTC.  And what’s odd is I’d swear at least the 774 transmitter is still on air an hour later with a dead/open carrier. 

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